3:50 AM
But then they deleted their post: Wrong exercise about a proof for $(P(\Bbb R))'\cong\Bbb R^\infty$?
7 hours later…
10:54 AM
Mar 25 '13 at 19:46, by Martin Sleziak
The tag proper-classes was created in this question. There was a new question about classes, and since the tag already existed, I've added it.
2 hours later…
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